Micromax A74 L1, A74 L2 Service Manual

A74 L1&L2

service manual

2

content

 1、 Product introduce..………..p3-p4

 2、 Disassembly guide ……….p5-p17

 3、Structure parts diagram…..p18

 4、 Repairing guide …………...p19-p29

3

Product introduce

4

Product introduce

Model ：

Product size：134*67*10.25

Platform：MTK6572，dual-core 1GHz
Memory： 4GB+4Gb (Nand&sdram+RAM）
System：Android 4.2

Frequency band: WCDMA：2100，GSM：900/1800MHz

Battery： 1500mAh
charger: Travel charger
USB cable: MICRO 5PIN

earphone： 3.5jack

LCD&TP： 4.5 FWVGA, Capacitance TP
Camera：0.3M and 5.0M CMOS
Support：BT2.1，WIFI，FM。
Support：3D graphics accelerator，accelerator sensor, distance sensor, light

feeling sensor。

5

Hot gun

Tweezer

Solder iron

Tommy bar

Cross Screw driver

1. Tools list

Tweezer /Cross screw driver/ Solder/Tommy bar/hot gun

Disassembly guide

6

2. Battery caver disassembly

open the battery cover

，

as the Fig. 1

Fig. 1

Disassembly guide

Battery

cover

7

3. Back caver disassembly

1） Unscrew 12 screws in back cover ，as the Fig.2；

Fig. 2

Disassembly guide

8

Fig. 3

2） Disassemble back cover with Tommy bar ，as the Fig.3；

Disassembly guide

Back

cover

SPK

9

4.Main board and front cover disassembly

1）The main components of distribution，as the fig.4；

Fig.4

Disassembly guide

Main PCBA LCD con.

Front

CAM con.

Back CAM.

USB con.

Earphoe

con.

TP con.

T card

con.

SIM con.

Main FPC

Sub PCBA

vibrator

RF cable

Battery con.